The Rams lost 1-0 at the City Ground to their local rivals and despite feeling that his team played well, Clough admits that they made too many mistakes.
"I am very pleased with the performance, I thought we were very good," Sky Sports News quotes him as saying.
"Just like at Leicester in the [Capital One] Cup in midweek we caused our own downfall again with the goal. We should have cleared the ball first of all and then we lost the man from the corner.
"It is naivety again, we have a lot of young players. We are not getting away with the mistakes we are making and a lot in the opposition penalty area is not going our way either - and we are certainly not getting a lot of breaks from the officials."
Following today's defeat Derby County are 14th in the Championship table.